German Police say an unknown suspect is blackmailing several companies by threatening to poison food products.
They said the suspect had sent a letter to the companies and to the police threatening to manipulate food products in Germany and abroad.
German authorities said that they have photographs of suspect depositing food products in a supermarket in the southern German town of Friedrichshafen and that five products were later found to contain a lethal amount of poison.
dpa/NAN.